Avionics system simulation platform can support advanced research,schematic design,detailed design and system integration for its flexibility and low cost. It has become an integral design method to the development of avionics system. This paper presents the detailed design and implementation of the display system simulator in the IMA system simulation platform. Firstly the composition of IMA system simulation platform was introduced, and then the composition architecture of display system simulator. This paper gives a detailed introduction of the hardware configuration, avionics network configuration, interactiveinterface and logic processing of display system simulator. Finally, the acceptance test procedure verified the display system simulator by IMA System. The results show the system can satisfy the functional and performance requirements.